The James Webb Space Telescope

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Message 1684770 - Posted: 27 May 2015, 15:16:02 UTC

Update:

NASA's Webb 'Strutting its Stuff' in New 'Behind the Webb' Video

The newest video in the "Behind the Webb" series, called "Strutting its Stuff," provides a look at three “struts” or poles that fold and unfold the secondary mirror on the James Webb Space Telescope. The video series takes viewers behind the scenes to understand more about the Webb telescope, the world's next-generation space observatory and successor to NASA's Hubble Space Telescope. Designed to be the most powerful space telescope ever built, Webb will observe the most distant objects in the universe, provide images of the first galaxies formed and study unexplored planets around distant stars.


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Message 1686621 - Posted: 1 Jun 2015, 14:34:58 UTC

Engineers Conduct "Heart Surgery" on the Webb Telescope

In this new NASA video, engineers from Airbus Defense and Space (DS), Ottobrunn, Germany, dressed in white protective suits and special white gloves, recently completed a delicate surgical procedure to exchange two key components from the "heart" of an instrument on the James Webb Space Telescope at NASA's Goddard Space Flight Center in Greenbelt, Maryland.


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Message 1689769 - Posted: 10 Jun 2015, 12:39:10 UTC

James Webb Space Telescope
Advisory Committee


May 2015: The 11th Meeting of the James Webb Space Telescope Advisory Committee (JSTAC)

The JSTAC met at STScI on May 21-22nd 2015. The committee heard updates on the status, schedule, and budget of the JWST program from NASA HQ and GSFC. STScI presented the committee a comprehensive update on their work for science and flight operations for JWST, including separate presentations on activities related to engaging the science community on JWST, data analysis tools, planning for the Early Release Science program, and the E/PO landscape. NASA Astrophysics Director Paul Hertz also gave the community an update on the status of the Astrophysics program and current/future work to plan for the next Decadal Survey.

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Message 1693847 - Posted: 20 Jun 2015, 10:19:08 UTC

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Message 1694551 - Posted: 22 Jun 2015, 9:53:22 UTC - in response to Message 1693847.  

http://eandt.theiet.org/magazine/2015/04/james-webb-space-telescope.cfm

Seems to me that ('cause of the costs), they could put several Hubbles into Space already...& they got several of them just waiting around to be refitted...
;)


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Message 1694557 - Posted: 22 Jun 2015, 11:07:16 UTC - in response to Message 1694551.  

http://eandt.theiet.org/magazine/2015/04/james-webb-space-telescope.cfm

Seems to me that ('cause of the costs), they could put several Hubbles into Space already...& they got several of them just waiting around to be refitted...
;)


The JWST is much more sophisticated than the Hubble and could even reveal more information on Dark Energy! I'd say this project is money well spent :)
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Message 1695846 - Posted: 26 Jun 2015, 6:42:58 UTC

NASA Technology Protects Webb Telescope from Contamination

"The Molecular Adsorber Coating (MAC) is a NASA Goddard coatings technology that was developed to adsorb or entrap outgassed molecular contaminants for spaceflight applications," said Nithin Abraham, Thermal Coatings Engineer at NASA's Goddard Space Flight Center in Greenbelt, Maryland. MAC is currently serving as an innovative contamination mitigation tool for Chamber A operations at NASA Johnson Space Center in Houston, Texas.


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Message 1695882 - Posted: 26 Jun 2015, 7:58:51 UTC - in response to Message 1694557.  

http://eandt.theiet.org/magazine/2015/04/james-webb-space-telescope.cfm

Seems to me that ('cause of the costs), they could put several Hubbles into Space already...& they got several of them just waiting around to be refitted...
;)


The JWST is much more sophisticated than the Hubble and could even reveal more information on Dark Energy! I'd say this project is money well spent :)

yes, but it's running LATE...& over expences!

& US has a several Hubble clones, that r finished...just need a different optics setting, 'cause they were spy satelites! ;)


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Message 1695886 - Posted: 26 Jun 2015, 8:04:35 UTC - in response to Message 1695882.  

http://eandt.theiet.org/magazine/2015/04/james-webb-space-telescope.cfm

Seems to me that ('cause of the costs), they could put several Hubbles into Space already...& they got several of them just waiting around to be refitted...
;)


The JWST is much more sophisticated than the Hubble and could even reveal more information on Dark Energy! I'd say this project is money well spent :)

yes, but it's running LATE...& over expences!

& US has a several Hubble clones, that r finished...just need a different optics setting, 'cause they were spy satelites! ;)


Yes, but the JWST is.. 'Special' ;)
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Message 1695896 - Posted: 26 Jun 2015, 8:32:24 UTC - in response to Message 1695886.  

Yes, but the JWST is.. 'Special' ;)

there is no agrument to that comment from a female!
:D


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Message 1699468 - Posted: 8 Jul 2015, 10:35:02 UTC
Last modified: 8 Jul 2015, 10:37:28 UTC

Th Association of Universities for Research in Astronomy has proposed a new High Definition Space Teleacope with a 10 meters mirror, which should work in the optical and UV ranges, not in the IR like JWST. They say that the JWST is not the Hubble successor. The new telescope should not need any cooling equipment,unlike JWST, and should be placed in the L2 Lagrange point. Its cost should be 10 billion USD, compared to the 8 billion USD of the JWST. Its main mission would be that of analyzing the atmospheres of the exoplanets to search for any sign of life.
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Message 1710714 - Posted: 10 Aug 2015, 6:19:41 UTC

NASA Technology Protects Webb Telescope from Contamination

"The Molecular Adsorber Coating (MAC) is a NASA Goddard coatings technology that was developed to adsorb or entrap outgassed molecular contaminants for spaceflight applications," said Nithin Abraham, Thermal Coatings Engineer at NASA's Goddard Space Flight Center in Greenbelt, Maryland. MAC is currently serving as an innovative contamination mitigation tool for Chamber A operations at NASA Johnson Space Center in Houston, Texas.


Round of Testing Completed on Webb Telescope Flight Mirrors

This July 11, 2015 photograph captures one of the final, if not the final, James Webb Space Telescope flight primary mirror segments to be processed through NASA Goddard Space Flight Center's Calibration, Integration and Alignment Facility (CIAF).


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Message 1717823 - Posted: 24 Aug 2015, 16:46:08 UTC

NASA's Webb Sunshield Gives an "Open Wide" for Inspection

The sunshield on NASA's James Webb Space Telescope is the largest part of the observatory—five layers of thin, silvery membrane that must unfurl reliably in space. The precision in which the tennis-court sized sunshield has to open must be no more than a few centimeters different from its planned position.


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NASA's Webb "Cosmic Shutterbug" in New 'Behind the Webb' Video

The newest video in the "Behind the Webb" series, called "Cosmic Shutterbug," provides a look at how tiny "microshutters" will open to give NASA's James Webb Space Telescope the capability to see farther in the universe than ever before.

In "Cosmic Shutterbug," viewers go into the cleanroom in Airbus Defense and Space (formerly known as Astrium) in Ottobrum, Germany to see the microshutters. The microshutters are housed in the Near Infrared Spectrograph (NIRSpec) instrument that will fly aboard the Webb telescope.

NIRSpec is a powerful instrument that will record the spectra of light from distant objects. The microshutters, a key component of NIRSpec, are a new technology specifically developed for the Webb telescope.


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Message 1720849 - Posted: 1 Sep 2015, 6:37:27 UTC
Last modified: 1 Sep 2015, 6:41:38 UTC

James Webb Space Telescope Backplane Arrives at NASA Goddard for Mirror Assembly


One of the most crucial pieces of the James Webb Space Telescope, the flight backplane, arrived on Aug. 25, on schedule for Webb's 2018 launch date at NASA's Goddard Space Flight Center in Greenbelt, Maryland, for mirror assembly. The backplane is the "spine" of the telescope, responsible for holding its 18 hexagonal mirrors and instruments steady while the telescope is looking into deep space.

“The telescope’s beryllium mirrors are held together nearly motionlessly in space by the backplane, which also acts as a stable platform during ground test operations and launch,”


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Message 1720866 - Posted: 1 Sep 2015, 7:56:20 UTC
Last modified: 1 Sep 2015, 8:00:07 UTC

The JWST will be quite accurate in analyzing the atmosphere of exoplanets:

http://www.stsci.edu/jwst/jwst-science-corner/paper-summary-exoplanets/

Why JWST is important:- This study shows that with JWST spectroscopy, it is possible to constrain or detect anthropogenic pollution in the atmospheres of exoplanets.

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Message 1723756 - Posted: 9 Sep 2015, 6:48:57 UTC

James Webb Space Telescope's ISIM Passes Severe-Sound Test

A critical part of NASA's James Webb Space Telescope successfully completed acoustic testing during the week of Aug. 3. The Integrated Science Instrument Module, or ISIM, passed all of the "severe sound" tests that engineers put it through.

The ISIM was subjected to the acoustic test at NASA's Goddard Space Flight Center in Greenbelt, Maryland. The ISIM was tested at five different sound levels to demonstrate it could survive the noise and vibrations it will experience when the Webb telescope is launched in 2018 aboard an Ariane 5 rocket. The sound experienced during launch comes primarily from the solid rocket motors of the launch vehicle.

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Message 1725921 - Posted: 15 Sep 2015, 9:05:31 UTC

The Secrets of NASA's Webb Telescope’s "Deployable Tower Assembly"

The DTA looks like a big black pipe and is made out of graphite-epoxy composite material to ensure stability and strength with extreme changes in temperature like those encountered in space. When fully deployed, the DTA reaches ten feet in length.

The DTA interfaces and supports the spacecraft and the telescope structures. It features two large nested telescoping tubes, connected by a mechanized lead screw. It is a deployable structure that is both very light and extremely strong and stable.


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Message 1726265 - Posted: 16 Sep 2015, 18:10:59 UTC - in response to Message 1549693.  

NASA's James Webb Space Telescope Structure Stands Tall

The flight structure of NASA's James Webb Space Telescope was standing tall on a platform in the cleanroom at NASA's Goddard Space Flight Center in Greenbelt, Maryland on August 30.

The telescope structure includes the primary mirror backplane assembly; the main backplane support fixture; and the deployable tower structure that lifts the telescope off of the spacecraft. The three arms at the top come together into a ring where the secondary mirror will reside.

http://www.nasa.gov/feature/goddard/nasas-james-webb-space-telescope-structure-stands-tall

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Message 1726452 - Posted: 17 Sep 2015, 9:25:36 UTC

Thank you for the update Lynn :)
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Message 1726487 - Posted: 17 Sep 2015, 13:19:47 UTC

Three more years til it is launched.
Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required. This no longer applies in light of current events.
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Message boards : Science (non-SETI) : The James Webb Space Telescope


 
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